CN101362946B - Powder of burned magnesia - Google Patents
Powder of burned magnesia Download PDFInfo
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- CN101362946B CN101362946B CN200810129839XA CN200810129839A CN101362946B CN 101362946 B CN101362946 B CN 101362946B CN 200810129839X A CN200810129839X A CN 200810129839XA CN 200810129839 A CN200810129839 A CN 200810129839A CN 101362946 B CN101362946 B CN 101362946B
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- powder
- magnesium
- magnesia
- metal
- roast
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- 239000000843 powder Substances 0.000 title claims abstract description 172
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 78
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 239000011777 magnesium Substances 0.000 claims abstract description 38
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 38
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 37
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 12
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052718 tin Inorganic materials 0.000 claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 11
- 239000011701 zinc Substances 0.000 claims abstract description 11
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 9
- 229910052731 fluorine Inorganic materials 0.000 claims description 17
- 239000011737 fluorine Substances 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 15
- 230000005284 excitation Effects 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 10
- 229910052728 basic metal Inorganic materials 0.000 claims description 10
- 150000003818 basic metals Chemical class 0.000 claims description 10
- 239000011135 tin Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 claims description 4
- -1 magnesium alkaline-earth metal Chemical class 0.000 claims description 4
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical group [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 4
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 4
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 2
- 150000001340 alkali metals Chemical class 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract 1
- 208000028659 discharge Diseases 0.000 description 31
- 239000007789 gas Substances 0.000 description 29
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 6
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910001512 metal fluoride Inorganic materials 0.000 description 3
- 239000011775 sodium fluoride Substances 0.000 description 3
- 235000013024 sodium fluoride Nutrition 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 2
- 229910001632 barium fluoride Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- QCCDYNYSHILRDG-UHFFFAOYSA-K cerium(3+);trifluoride Chemical compound [F-].[F-].[F-].[Ce+3] QCCDYNYSHILRDG-UHFFFAOYSA-K 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000254 damaging effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 150000002681 magnesium compounds Chemical class 0.000 description 2
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 2
- LVIYYTJTOKJJOC-UHFFFAOYSA-N nickel phthalocyanine Chemical compound [Ni+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 LVIYYTJTOKJJOC-UHFFFAOYSA-N 0.000 description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 2
- TYIZUJNEZNBXRS-UHFFFAOYSA-K trifluorogadolinium Chemical compound F[Gd](F)F TYIZUJNEZNBXRS-UHFFFAOYSA-K 0.000 description 2
- 229940105963 yttrium fluoride Drugs 0.000 description 2
- RBORBHYCVONNJH-UHFFFAOYSA-K yttrium(iii) fluoride Chemical compound F[Y](F)F RBORBHYCVONNJH-UHFFFAOYSA-K 0.000 description 2
- JBDOSUUXMYMWQH-UHFFFAOYSA-N 1-naphthyl isothiocyanate Chemical compound C1=CC=C2C(N=C=S)=CC=CC2=C1 JBDOSUUXMYMWQH-UHFFFAOYSA-N 0.000 description 1
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229910016569 AlF 3 Inorganic materials 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 229910016036 BaF 2 Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910005690 GdF 3 Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 229910008449 SnF 2 Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- XNEYCQMMVLAXTN-UHFFFAOYSA-N carbonic acid;magnesium Chemical compound [Mg].OC(O)=O XNEYCQMMVLAXTN-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 description 1
- 239000011654 magnesium acetate Substances 0.000 description 1
- 235000011285 magnesium acetate Nutrition 0.000 description 1
- 229940069446 magnesium acetate Drugs 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- YUOWTJMRMWQJDA-UHFFFAOYSA-J tin(iv) fluoride Chemical compound [F-].[F-].[F-].[F-].[Sn+4] YUOWTJMRMWQJDA-UHFFFAOYSA-J 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
- C04B2235/445—Fluoride containing anions, e.g. fluosilicate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Luminescent Compositions (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
The present invention relates to a calcined magnesia powder. The invention provides a magnesium oxide powder which efficiently emits ultraviolet light having a wavelength of about 250nm when excited by ultraviolet light generated by gas discharge of Xe gas. The calcined magnesia powder is a calcined magnesia powder obtained by calcining a powder mixture containing a magnesia source powder and a fluoride of at least 1 auxiliary metal selected from the group consisting of alkali metals, alkaline earth metals other than magnesium, rare earth metals, aluminum, zinc and tin, wherein the fluoride is contained in an amount of 0.05 to 30 mol relative to 100 mol of magnesium in the magnesia source powder.
Description
Technical field
The present invention relates to a kind of magnesia roast powder, its when the ultraviolet excitation that produced by the geseous discharge of Xe gas, near the UV-light the emit wavelength 250nm.
Background technology
AC type plasma display panel (hereinafter to be referred as AC type PDP) generally comprises discharge space and the opposed backplate that front panel and clamping as video display board are filled with discharge gas.Front panel comprises the pair of discharge electrodes that forms on front glass substrate, the front glass substrate, for covering the dielectric layer that discharge electrode forms and the dielectric medium protective membrane that forms in dielectric layer surface.Backplate comprises the address electrode that forms on back side glass substrate, the back side glass substrate, the dividing plate that is used for the differentiation discharge space that covers back side glass substrate and address electrode formation and red, green, the blue or green luminescent coating that forms in baffle surface.
The mixed gas of discharge gas general using Xe (xenon) and Ne (neon).Xe is discharge gas in this gas mixture, and Ne is buffer gas.
In the formation material of dielectric medium protective layer, for operating voltage, the protection dielectric layer that reduces AC type PDP is not subjected to isoionic impact the in the discharge space generation, be widely used secondary discharge coefficient height, the good magnesium oxide of anti-sputter.
In AC type PDP; to improve the characteristics of luminescence as purpose; carrying out following discussion: on the surface of the discharge space side of dielectric medium protective layer UV-light is set and emits layer, this UV-light is emitted layer and is utilized the UV-light that is generated by discharge gas to be excited and the UV-light of emitting the wavelength of fluor that can the excited fluophor layer all the time.That is, by except using the UV-light of being emitted by discharge gas, also use by UV-light and emit layer fluor of the ultraviolet excitation luminescent coating of emitting, improve the method for the luminous efficiency of luminescent coating.
For example disclose AC type PDP in the patent documentation 1; this AC type PDP emits UV-light on layer surface of the discharge space side that is formed on the dielectric medium protective layer; described UV-light is emitted layer and is comprised the smoked magnesium oxide single crystal; this smoked magnesium oxide single crystal is that the steam that utilizes magnesium to be heated to produce generates by gaseous oxidation, and its average particle diameter of measuring through the BET method is more than 500 dusts, more than preferred 2000 dusts.And disclose, this UV-light is emitted layer and is emitted have the long UV-light of spike in 230～250nm scope, because fluor is by the ultraviolet excitation of this wavelength and luminous, so the brightness of PDP increases.
Patent documentation 1: TOHKEMY 2006-59786 communique
Summary of the invention
The object of the present invention is to provide a kind of magnesia roast powder; the material that its UV-light that forms as the dielectric medium protective layer at the gas discharge luminescent device of AC type PDP etc. is emitted layer is useful; when the ultraviolet excitation that generated by the geseous discharge of Xe gas, emit expeditiously and near wavelength 250nm, have the long UV-light of spike.
The inventor finds, by burning till powdered mixture, can obtain to contain fluorine with 0.01～24 molar weight and with respect to 100 moles of magnesia roast powders that contain assistant metal with 0.01～30 molar weight of magnesium with respect to 100 moles in magnesium, the powder of fluorochemical that described powdered mixture contains the magnesium oxide source powder and is selected from least a kind of assistant metal of alkaline-earth metal, rare earth metal, aluminium, zinc and tin beyond the basic metal, magnesium, it contains fluorochemical with respect to 100 moles in the magnesium in the magnesium oxide source powder with 0.05～30 molar weight.And during ultraviolet excitation that this magnesia roast powder is generated by the geseous discharge of Xe gas, high-level efficiency emits that (the particularly scope of wavelength 230～260nm) has the long UV-light of spike near wavelength 250nm, thereby finishes the present invention.
And the inventor also finds, by replacing the fluorochemical powder of above-mentioned assistant metal, take the amount of the assistant metal scope with respect to 100 moles as 0.05～30 mole of the total amounts of magnesium in the powdered mixture, and the fluorine amount in the fluorochemical powder is that the amount of 0.1～10 mole scope is used the oxide powder of assistant metal or by the compound powder (except fluorochemical powder) of thermal conversion as the assistant metal of metal oxide with respect to 1 mole of assistant metal, with at least a kind of fluorochemical powder that is selected from magnesium fluoride powder and Neutral ammonium fluoride powder, also can obtain the ultraviolet excitation that is generated by the geseous discharge by Xe gas, near the magnesia roast powder of the UV-light the high-level efficiency emit wavelength 250nm.
Therefore, the present invention burns till the magnesia roast powder that powdered mixture obtains, the powder of fluorochemical that described powdered mixture contains the magnesium oxide source powder and is selected from least a kind of assistant metal of alkaline-earth metal, rare earth metal, aluminium, zinc and tin beyond the basic metal, magnesium, it contains fluorochemical with respect to 100 moles in the magnesium in the magnesium oxide source powder with 0.05～30 molar weight.The firing temperature of powdered mixture is preferably the temperature of 850～1500 ℃ of scopes.The fluorochemical powder is with respect to 100 moles of amounts that are preferably 0.1～25 mole of the magnesium in the magnesium oxide source powder.
The present invention burns till the magnesia roast powder that powdered mixture obtains, and described powdered mixture is to contain the magnesium oxide source powder; Be selected from alkaline-earth metal, rare earth metal, aluminium, zinc and tin beyond the basic metal, magnesium at least a kind of assistant metal oxide compound powder or become compound powder beyond the assistant metal fluorochemical of metal oxide by thermal conversion; And the powdered mixture that is selected from least a kind of fluorochemical powder of magnesium fluoride powder and Neutral ammonium fluoride powder, 100 moles in magnesium during it mixes with respect to powder contains assistant metal with 0.05～30 molar weight, and contains fluorochemical in the fluorochemical powder with respect to 1 mole of assistant metal with 0.1～10 molar weight.The firing temperature of powdered mixture is preferably the temperature of 850～1500 ℃ of scopes.Assistant metal in the powdered mixture is with respect to 100 moles of amounts that are preferably 0.1～25 mole of the magnesium in the powdered mixture.Fluorine in the fluorochemical powder is with respect to 1 mole of amount that is preferably 0.5～5 mole of the assistant metal in the powdered mixture.
The present invention also is magnesia roast powder, at least a kind of assistant metal that it contains magnesium, fluorine and is selected from basic metal, magnesium alkaline-earth metal, rare earth metal, aluminium, zinc and tin in addition, contain fluorine with respect to 100 moles in magnesium with 0.01～24 molar weight, and contain assistant metal with respect to 100 moles in magnesium with 0.01～30 molar weight.
Magnesia roast powder of the present invention is emitted in the manufacturing of layer useful in the UV-light of the discharge space side surface of the dielectric medium protective layer that is formed at AC type plasma display panel especially.
Magnesia roast powder of the present invention is emitted by the ultraviolet excitation, the high-level efficiency that are generated by the discharge gas of Xe gas that (scope of wavelength 230～260nm) has the long UV-light of spike near wavelength 250nm by data shown in the aftermentioned embodiment as can be known.The fluorescent material that uses in the gas discharge luminescent devices such as AC type PDP or luminescent lamp by near the ultraviolet excitation the wavelength 250nm, is emitted visible light shown in above-mentioned patent documentation 1.Therefore; when in the discharge space of use Xe gas as the gas discharge luminescent device of discharge gas that will be configured in by the magnesium oxide films of magnesia roast powder manufacturing of the present invention AC type PDP or luminescent lamp etc., particularly during discharge space side surperficial of dielectric medium protective layer; can increase geseous discharge by Xe gas and be discarded near the wavelength 250nm in the discharge space UV-light light quantity, the result can increase the amount of the visible light of being emitted by gas discharge luminescent device.It is particularly useful when therefore, the magnesia roast powder of the present invention UV-light that is formed at the discharge space side surface of AC type PDP dielectric medium protective layer in manufacturing is emitted layer.
Embodiment
Magnesia roast powder of the present invention is that powdered mixture is burnt till, thereby make the fluorochemical powder that the ratio that described powdered mixture reaches 0.05～30 molar range with the amount of the fluorochemical of assistant metal with respect to 100 moles in magnesium contains the magnesium oxide source powder and is selected from least a kind of assistant metal of alkaline-earth metal, rare earth metal, aluminium, zinc and tin beyond basic metal, the magnesium.
In the manufacturing of magnesia roast powder of the present invention, can use magnesium oxide powder and by the magnesium compound powder of thermal conversion as magnesium oxide powder as the magnesium oxide source powder.As the example that becomes magnesian magnesium compound powder by thermal conversion, can enumerate magnesium hydroxide powder, alkaline carbonic acid magnesium dust, magnesium nitrate powder and magnesium acetate powder.The magnesium oxide powder that the magnesium oxide source powder is preferably magnesium oxide powder, is particularly preferably made by the synthetic oxidation style of gas phase.The synthetic oxidation style of so-called gas phase is exactly that MAGNESIUM METAL steam is contacted with the state of oxygen containing gas with gas phase, makes the MAGNESIUM METAL steam oxidation and makes the method for magnesium oxide powder.
The purity of magnesium oxide source powder is preferably more than the 99.95 quality %.The preferred BET specific surface area of magnesium oxide source powder is 5～150m
2/ g, be particularly preferably 7～50m
2The scope of/g.Be explained, the particle diameter of magnesium oxide source powder only otherwise infringement effect of the present invention then is not particularly limited.
The preferred purity of fluorochemical powder of the assistant metal that uses in the manufacturing of magnesia roast powder of the present invention is more than the 99.0 quality %.The particle diameter of fluorochemical powder only otherwise infringement effect of the present invention then is not particularly limited.The fluorochemical powder can be for anhydride, can also be hydrate.The fluorochemical powder can use separately a kind, can also be also with more than 2 kinds.
The example of the alkali-metal fluorochemical powder that can use among the present invention can be enumerated lithium fluoride powder, sodium fluoride powder and Potassium monofluoride powder.The example of the fluorochemical powder of alkaline-earth metal can be enumerated Calcium Fluoride (Fluorspan) powder and barium fluoride powder.The example of the fluorochemical powder of rare earth metal can be enumerated yttrium fluoride powder, cerium fluoride powder and gadolinium fluoride powder.
When making magnesia roast powder of the present invention, at first the magnesium oxide source powder is mixed the preparation powdered mixture with the fluorochemical powder of assistant metal.The mixing ratio of magnesium oxide source powder and fluorochemical powder is, the amount of fluorochemical is 0.05～30 mole scope, is preferably 0.1～25 mole scope, 0.2～15 mole scope more preferably with respect to 100 moles in magnesium.
Then put into process furnace by the powdered mixture that above-mentioned mixed processes obtains, usually under the condition of 100～500 ℃/hour of heat-up rates, be heated to preferred 850～1500 ℃ scope, more preferably 900～1500 ℃ scope, further preferred 1000～1500 ℃ temperature, then heating under the temperature of this scope burn till preferred more than 10 minutes, more preferably 20 minutes～5 hours, further preferred 20 minutes～2 hours.The burned material of powdered mixture then is cooled to room temperature with the condition of 100～500 ℃/hour of cooling rates, obtains the magnesia roast powder of target.
In addition, by replacing the fluorochemical powder of assistant metal, use the oxide powder of assistant metal or by thermal conversion as the compound powder (except the fluorochemical powder) of the assistant metal of metal oxide be selected from magnesium fluoride powder and at least a kind of fluorochemical powder of Neutral ammonium fluoride powder, also can similarly make the magnesia roast powder of emitting expeditiously UV-light.When using the oxide powder of these assistant metals or compound powder and fluorochemical powder, make take the amount of the assistant metal scope with respect to 100 moles as 0.05～30 mole in the magnesium in the powdered mixture, preferred 0.1～25 mole scope, more preferably 0.2～15 mole scope, fluorine amount in the fluorochemical powder is 0.1～10 mole scope with respect to 1 mole of the assistant metal in the powdered mixture, the ratio that is preferably 0.5～5 mole scope is mixed with the magnesium oxide source powder, the mixed powder of the oxide powder of assistant metal or compound powder and fluorochemical powder burns till.
As the compound thing powder of the oxide powder that converts assistant metal by heating to, such as the hydroxide powder that can enumerate assistant metal, carbonate powder, bicarbonate powder, nitrate powder, acetate powder, oxalate powder etc.More than the preferred purity 99.0 quality % of the oxide powder of assistant metal or compound powder and fluorochemical powder.The particle diameter of these powder only otherwise damaging effect of the present invention then is not particularly limited.
The magnesia roast powder of the present invention that as above obtains is take magnesium oxide as principal constituent, contains the roast powder of fluorine and at least a kind of assistant metal that is selected from basic metal, magnesium alkaline-earth metal, rare earth metal, aluminium, zinc and tin in addition.
The preferred fluorine content of magnesia roast powder of the present invention is 0.01～24 mole scope, more preferably 0.02～12 mole scope, 0.02～5 mole scope more preferably with respect to 100 moles in magnesium.The content of assistant metal is preferably 0.01～30 mole scope, more preferably 0.025～25 mole scope, 0.1～5 mole scope more preferably with respect to 100 moles in magnesium.In addition, the content of assistant metal is preferably 0.25～50 mole scope, 0.4～30 mole scope more preferably with respect to 1 mole in fluorine.In addition, the BET specific surface area of magnesia roast powder of the present invention is preferably 0.1～30m
2The scope of/g.
The UV-light that magnesia roast powder of the present invention can adopt the known methods such as spray method or electrostatic applications method to be made as AC type PDP or luminescent lamp is emitted the useful magnesium oxide films of layer.The particle diameter of magnesia roast powder only otherwise damaging effect of the present invention then is not particularly limited.
Embodiment
[embodiment 1～30 and comparative example 1,2]
(2000A, the マ テ リ ア Le ズ of space section (strain) produce, purity: 99.98 quality %, BET specific surface area: 8.7m at the magnesium oxide powder of being made by the synthetic oxidation style of gas phase
2/ g) among the 6.0g (0.149 mole), the amount shown in the according to the form below 1 is added metal fluoride powder shown in the following table 1, mixes, and obtains powdered mixture.The powdered mixture that obtains is put in the capacity 25mL alumina crucible, be put in the electric furnace after alumina crucible is added a cover, with 240 ℃/hour heat-up rates temperature in the stove is risen to the temperature of following table 1, then under this temperature, heat and burnt till 30 minutes.Then, temperature is cooled to room temperature with 240 ℃ of/hour cooling rates in the stove, obtains magnesia roast powder.
Table 1
*: be that addition with the metal fluoride powder is converted into the value with respect to the molar weight of 100 moles in magnesium in the bracket.
LiF: lithium fluoride powder (purity 99.9 quality %)
NaF: sodium fluoride powder (purity 99 quality %)
KF: Potassium monofluoride powder (purity 99.99 quality %)
CaF
2: Calcium Fluoride (Fluorspan) powder (purity 99 quality %)
BaF
2: barium fluoride powder (purity 99.999 quality %)
AlF
3: aluminum fluoride powder (purity 99.9 quality %)
ZnF
24H
2O: zinc fluoride tetrahydrate powder (purity 99 quality %)
SnF
2: Tin tetrafluoride. powder (purity 99 quality %)
CeF
3: cerium fluoride powder (purity 99.99 quality %)
YF
3: yttrium fluoride powder (purity 99.9 quality %)
GdF
3: gadolinium fluoride powder (purity 99.99 quality %)
NiF
2: nickelous fluoride powder (purity 99 quality %)
Content and the UV-light luminous intensity of the metal that adds as the contained fluorine of embodiment 1～30 and comparative example 1,2 magnesia roast powders of making and fluorochemical utilize following methods to measure.The results are shown in following table 2.
[content of the metal that adds as fluorine and fluorochemical]
Measure in the solution prepare with the dissolving with hydrochloric acid magnesia roast powder content as the assistant metal of fluorine and fluorochemical interpolation.The fluorine amount utilizes the method for 34.1 records of JIS-0102 (plant effluent test method) to measure, and the assistant metal amount utilizes the ICP luminescence analysis to measure.
[UV-light luminous intensity]
To the UV-light of magnesia roast powder irradiation by the geseous discharge generation of Xe gas, measure the ultraviolet spectrum of emitting from burned material, try to achieve near (the UV-light luminous intensity of the peak-peak of wavelength region 230～260nm) of wavelength 250nm.
Table 2
Notes 1) metal content and fluorine content are the content with respect to 100 moles in magnesium.
Annotate 2) UV-light luminous intensity is for take the UV-light luminous intensity of comparative example 2 relative value as 100.
By the result shown in the table 2 as can be known, burn till with scope of the present invention and contain the magnesium oxide source powder and be selected from the powdered mixture of at least a kind of metal fluoride powder of alkaline-earth metal, rare earth metal, aluminium, zinc and tin beyond the basic metal, magnesium and the magnesia roast powder that obtains, when the ultraviolet excitation that generated by the discharge gas of Xe gas, has the long UV-light of spike with (scope of wavelength 230～260nm) near the high-level efficiency emit wavelength 250nm.On the other hand, shown in comparative example 2, even if near the UV-light the magnesia roast powder emit wavelength 250nm that the fluorochemical powder of the transition metal of use nickelous fluoride powder etc. is made, its amount also is micro-.
Claims (9)
1. magnesia roast powder, it burns till powdered mixture and obtains, the powder of fluorochemical that described powdered mixture contains the magnesium oxide source powder and is selected from least a kind of assistant metal of alkaline-earth metal, rare earth metal, aluminium, zinc and tin beyond the basic metal, magnesium contains fluorochemical with respect to 100 moles in the magnesium in the magnesium oxide source powder with 0.05～30 molar weight;
The scope that this magnesia roast powder is emitted at wavelength 230～260nm by the ultraviolet excitation that is generated by the discharge gas of Xe gas has the long UV-light of spike.
2. magnesia roast powder as claimed in claim 1, it is to be fired under the temperature of 850～1500 ℃ of scopes.
3. magnesia roast powder as claimed in claim 1, wherein, the fluorochemical powder is 0.1～25 mole amount with respect to 100 moles in the magnesium in the magnesium oxide source powder.
4. magnesia roast powder, it burns till powdered mixture and obtains, and described powdered mixture is for containing the magnesium oxide source powder; Be selected from alkaline-earth metal, rare earth metal, aluminium, zinc and tin beyond the basic metal, magnesium at least a kind of assistant metal oxide powder or change the powder of the compound beyond the assistant metal fluorochemical of metal oxide into by heating; Powdered mixture with at least a kind of fluorochemical powder that is selected from magnesium fluoride powder and Neutral ammonium fluoride powder, 100 moles in magnesium in mixing with respect to powder contains assistant metal with 0.05～30 molar weight, and contains fluorochemical in the fluorochemical powder with respect to 1 mole of assistant metal with 0.1～10 molar weight;
The scope that this magnesia roast powder is emitted at wavelength 230～260nm by the ultraviolet excitation that is generated by the discharge gas of Xe gas has the long UV-light of spike.
5. magnesia roast powder as claimed in claim 4, it is to be fired under the temperature of 850～1500 ℃ of scopes.
6. magnesia roast powder as claimed in claim 4, wherein, the assistant metal in the powdered mixture is 0.1～25 mole amount with respect to 100 moles in the magnesium in the powdered mixture.
7. magnesia roast powder as claimed in claim 4, wherein, the fluorine in the fluorochemical powder is 0.5～5 mole amount with respect to 1 mole of the assistant metal in the powdered mixture.
8. magnesia roast powder, at least a kind of assistant metal that it contains magnesium, fluorine and is selected from basic metal, magnesium alkaline-earth metal, rare earth metal, aluminium, zinc and tin in addition, contain fluorine with respect to 100 moles in magnesium with 0.01～24 molar weight, and contain assistant metal with respect to 100 moles in magnesium with 0.01～30 molar weight;
The scope that this magnesia roast powder is emitted at wavelength 230～260nm by the ultraviolet excitation that is generated by the discharge gas of Xe gas has the long UV-light of spike.
9. such as each described magnesia roast powder in the claim 1,4 and 8, its UV-light for the manufacture of the dielectric medium protective layer discharge space side surface that is formed at AC type plasma display panel is emitted layer.
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| KR20110036475A (en) * | 2009-10-01 | 2011-04-07 | 장학정 | Method of manufacturing a magnesium oxide nanoparticle and magnesium oxide nanoparticle using the same |
| JP5736246B2 (en) * | 2010-07-08 | 2015-06-17 | 宇部マテリアルズ株式会社 | Film-forming materials used in physical vapor deposition |
| JP5745821B2 (en) * | 2010-11-12 | 2015-07-08 | タテホ化学工業株式会社 | Fluorine-containing magnesium oxide phosphor and method for producing the same |
| CN110317956B (en) * | 2019-07-23 | 2021-07-27 | 个旧兴华锌业有限公司 | Magnesium removal method for magnesium ion-containing solution |
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| CN1574166A (en) * | 2003-06-10 | 2005-02-02 | 三星Sdi株式会社 | Plasma display device |
| CN1664058A (en) * | 2005-02-21 | 2005-09-07 | 东南大学 | Process for preparing aluminate green fluorescent powder for plasma display device |
| JP2006265307A (en) * | 2005-03-22 | 2006-10-05 | Ube Material Industries Ltd | Manufacturing process of phosphor powder |
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| JP3941289B2 (en) * | 1998-06-30 | 2007-07-04 | 三菱マテリアル株式会社 | Protective film for PDP or PALC, method for producing the same, and PDP or PALC using the same |
| JP2002075173A (en) * | 2000-08-29 | 2002-03-15 | Matsushita Electric Ind Co Ltd | Electron emission element, electron source and manufacturing method of image-forming device |
| JP4075647B2 (en) * | 2003-03-12 | 2008-04-16 | 三菱マテリアル株式会社 | Method for manufacturing protective film for FPD |
| JP4541832B2 (en) | 2004-03-19 | 2010-09-08 | パナソニック株式会社 | Plasma display panel |
| JP4562742B2 (en) * | 2006-02-21 | 2010-10-13 | 宇部マテリアルズ株式会社 | Fluorine-containing magnesium oxide powder |
| JP4741420B2 (en) * | 2006-05-29 | 2011-08-03 | 宇部マテリアルズ株式会社 | Back plate for AC type plasma display panel |
| JP4818200B2 (en) * | 2006-05-29 | 2011-11-16 | 宇部マテリアルズ株式会社 | Back plate for AC type plasma display panel |
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| CN1574166A (en) * | 2003-06-10 | 2005-02-02 | 三星Sdi株式会社 | Plasma display device |
| CN1664058A (en) * | 2005-02-21 | 2005-09-07 | 东南大学 | Process for preparing aluminate green fluorescent powder for plasma display device |
| JP2006265307A (en) * | 2005-03-22 | 2006-10-05 | Ube Material Industries Ltd | Manufacturing process of phosphor powder |
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